JAVAlang.IllegalArgumentException:在启动存储库bean时不是托管类型：类

Question

嗨，我正在尝试在spring启动应用程序的启动时加载一些html" target="_blank">数据库值。我有自动连线服务，在服务中我有自动连线Dao。下面是错误。

组织。springframework。豆。工厂UnsatifiedDependencyException:创建名为“validationExpressionService”的bean时出错：通过字段“validationExpressionDao”表示的未满足的依赖项；嵌套的异常是org。springframework。豆。工厂BeanCreationException:创建名为“IValidationExpressionDao”的bean时出错：调用init方法失败；嵌套的异常是java。lang.IllegalArgumentException:不是托管类型：类com。瑞尔。nfg。刀。豆验证表达式

我已经添加了@EnitityScan@EnableJPARepository供参考，主键在字符串中，希望可以。

实体

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

/**
 * The Class ValidationExpression.
 */
package com.ril.nfg.dao.bean;

@Entity
@Table(name = "VALIDATION_EXPRESSION")
public class ValidationExpression implements Serializable {


    private static final long serialVersionUID = 9096950800262493651L;

    private String validationId;
    private String expression;
    private String createdBy;
    private Date createdOn;
    private String description;
    private String responseCode;

     @Id
     @Column(name = "VALIDATION_ID", nullable = false, length = 100)
    public String getValidationId() {
        return validationId;
    }

    public void setValidationId(String validationId) {
        this.validationId = validationId;
    }

     @Column(name = "EXPRESSION", nullable = false, length = 200)
    public String getExpression() {
        return expression;
    }

    public void setExpression(String expression) {
        this.expression = expression;
    }
//remaining getters and setters
}

存储库

package com.ril.nfg.dao.repos;

import com.ril.nfg.dao.bean.ValidationExpression;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

/**
 * The Interface IValidationExpressionDao.
 */
@Repository
public interface IValidationExpressionDao extends JpaRepository<ValidationExpression, String> {
}

服务

import java.util.List;

@Service
public class ValidationExpressionService {

    @Autowired
    IValidationExpressionDao validationExpressionDao;

    public List<ValidationExpression> getAll() {
        return validationExpressionDao.findAll();
    }
}

使用@Autwired服务初始化

public class CacheModuleParam implements ApplicationContextAware{

private static List<ValidationExpression> validationExpressionList = null;

@Autowired
    ValidationExpressionService validationExpressionService;

@Override
    public void setApplicationContext(final ApplicationContext appContext) throws BeansException {
validationExpressionList = validationExpressionService.getAll();
}
}

应用程序类

@ComponentScan(basePackages = {"com.ril.nfg"})
@EnableWebMvc
@EnableAutoConfiguration
@SpringBootApplication//(exclude={DataSourceAutoConfiguration.class})
@EnableJpaRepositories(basePackages="com.ril.nfg.dao.repos",entityManagerFactoryRef="oracleEntityManagerFactory")
//@EntityScan(basePackages = "com.ril.nfg.dao.bean")
public class NFGApplication {

    public static void main(String[] args) {
        SpringApplication.run(NFGApplication.class, args);
    }

}

互联网上的所有解决方案都集中在@EntityScan上。请帮助我理解这个代码有什么问题。提前感谢

Answer 1

你为什么有这些配置？只需将我们的应用程序放在包树中，比所有其他类高一级，您就可以使用这样的类：

@SpringBootApplication
public class NFGApplication {

    public static void main(String[] args) {
        SpringApplication.run(NFGApplication.class, args);
    }

}

包装：

com.ril.nfg <- here you put NFGApplication

以及com子包中的所有其他类。瑞尔。nfg

然后一切都会成功的！